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system components Flashcards

1
Q

components and safeties in start air system?

A
  1. receiver
  2. main air start valve
  3. slow turning valve
  4. turning gear interlock
  5. air start distributor
  6. flame trap
  7. air start valve
    8 safety valve

safeties - fusible plug, bursting discs, relief valve, turning gear interlock, flame trap

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2
Q

What is special about steering gear motors

A

They will not trip on overload, they have 200% windings

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3
Q

How long for a steering gear to turn from 35 to 30 according to solas 2.1?

A

no more than 28 seconds.

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4
Q

Switchboard safeties

A
  1. Preferential trips
  2. overload trips
  3. undervoltage/overvoltage trips
  4. low frequency trip
  5. reverse power relay
  6. Fuses,
  7. Circuit breakers
  8. earth lamps
  9. synchroscope
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5
Q

ORB codes?

A

C. collection of oil residues (sludge)
D. Non automaticdischarge overboard, transfers or disposal of bilge water
E. automaticstarting of discharge overboard, transfers or disposal of bilge water
F. Condition of oil filtering equipment
G. Accidental discharges of oil overboard
H. Bunkering
I. Additional general remarks

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6
Q

Explain the four stroke cycle

A
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7
Q

Test steering gear

A
  1. Inform bridge that you are testing steering gear to ensure the stern is clear
  2. enter compartment and check steering gear oil levels, maintenance pin is out, oil level in emergency hand pump.
  3. perform a communications check with the bridge and synch gyro reading
  4. inform bridge youre going to test one pump locally and compare rudder angles with the bridge.
  5. switch on one pump, 55a draw, test inrementally and compare with bridge.
  6. time rudder swing 35-30 is 28 secs
  7. repeat for second pump
  8. switch on both pumps and test level cut outs
  9. pass contorl to the bridge and inform them stearing gear tests complete and satisfactory.
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8
Q

How would you test the emergency generator onload?

A

Open the interconnector feeder breaker. An undervoltage relay detects dead bus and bring emdg on to the board.

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9
Q

What does EPIRB stand for? What does SART stand for

A
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10
Q

Enclosed space entry procedure

A
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11
Q

What is variable frequency drive?

A
  1. AC is converted to DC using rectifiers
  2. The has adjustable frequency using PULSE WIDTH MODULATION through a transistor.
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12
Q

Star Delta starter phase voltage reduction?

A

1/ root 3

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13
Q

How does a CO2 system work?

A

Inside each cabinet is two bottles with a valve on each
2. one valve with a 1 on it opens the main CO2 distribution valve for the compartment
3. the second valve marked with a 2 sends a CO2 shot to the bottle room to open 1

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14
Q

Preparing 1hr before arrival

A
  1. change from low to high sea suction
  2. reduce to manouvering speed
  3. bring on an additional generator to the board
  4. switch off FWG plant
  5. If OWS is in use, turn off and record in ORB
  6. Ensure Auxiliary blower is in auto
  7. blow through air recievors
  8. Ensure fuel service tank is sufficiently full
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15
Q

What would you do upon arrival in port?

A

1) When “finished with engines” has been rung, the engine can be shut down.
2) Record flowmeters and ME rpm counters again.
3) Change to ER control.
4) Shut main air start valve and drain manifold.
5) Turn off auxiliary blower.
6) Open indicator cocks.
7) Engage turning gear and start rotating engine.
8) Open T/C drains.
9) The standby generator can be taken off board and shutdown.
10) After 15-30 minutes stop the turning gear and stop main LO pumps.
11) Open up JWC to ME to maintain engine in ready condition

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16
Q

First ship? engines, power

A

Fort victoria, fleet solid support vessel, 2 pielstik V16 engines capable, gearbox, twin screw

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17
Q

Second ship?

A

RFA mounts bay, powered by 2 Wartsila 8L26 and 2 12V26

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18
Q

Third ship?

A

RFA waveknight, powered by 4 Wartsila 12V32 generators, and one 1.5MW 4R32 generator and propulsion by 2 VFD

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19
Q

ISPS code meaning

A

International ship and port facility security code.
Chapter 11 solas
Level 1 - normal threat, level 2 - heightened threat level 3 - exceptional threat level

20
Q

Sewage discharge rules?

A

3NM - comminuted and disinfected
12NM and travelling at 4 knots - raw sewage

21
Q

MSN, MIN, MGN

A

merchant shipping notice, marine guidance notice, marine information notice.

22
Q

Fire bulkheads and times

A

A class - prevent the passage of smoke and flame for 1 hour (A60,A30,A15,A0)
B class - prevent the passage of flame for 30 minutes (B15, B0)
C class - do not prevent the passage of smoke or flame.

23
Q

What is STCW?

A

International convention of standards of training, certification and watchkeeping for seafarers

24
Q

When was MLC published?

A

2006

25
Q

What is the purpose of ISM code

A
  1. Safe operation of a vessel
  2. Safe management of a vessel
  3. Prevention of pollution
26
Q

What are the requirements for a safety management system onboard

A
  1. A safety and environmental protection policy
  2. Details on how the vessel operates day to day
  3. How drills and training are conducted
  4. accident reporting procedures
  5. emergency procedures
  6. auditing procedures
  7. DP
27
Q

Boiler start up procedure

A
28
Q

Boiler shut down procedure

A
29
Q

Boiler water tests

A

pH, hardness, chlorides, nitrites, p-alkalinity, m-alkalinity, DEHA, phosphate,

30
Q

Why do we treat boiler water

A
  1. To prevent corrosion
  2. to prevent scale formation
  3. to remove dissolved gases
  4. to remove suspended solids and reduce sludge
    5.
31
Q

boiler trips

A
32
Q

Compressor trips

A
  1. Low LO pressure
  2. High water temperature
  3. water no flow
  4. motor overload
33
Q

What does STCW stand for

A

The international convention for standards of training, certification and watchkeeping for seafarers 1978

34
Q

What is the difference between watertight and weathertight doors?

A

Watertight doors are designed to prevent the passage of water between two compartments in either direction under a head of water.

Weathertight doors are designed to prevent water ingress into the ship in any sea conditions.

35
Q

definition of slow speed, medium speed and high speed engines?

A

slowspeed up to 200RPM, medium speed 200-1000RPM, High speed 1000+

36
Q

what is an MSN?

A

Merchant Shipping Notices convey mandatory information that must be complied with under UK legislation. These MSNs relate to Statutory Instruments and contain the technical detail of such regulations.

37
Q

What is an MGN

A

Marine Guidance Notes give significant advice and guidance relating to the improvement of the safety of shipping and of life at sea, and to prevent pollution
from shipping.

38
Q

What is an MIN?

A

Marine Information Notes are intended for a more limited audience e.g. training establishments or equipment manufacturers, or contain information which will only be of use for a short period of time, such as timetables for MCA examinations.

39
Q

ISM code 1-8
General Safety
Company designated masters
resource development emergency

A
  1. General
  2. Safety and environmental protection policy
  3. Companys responsibilities
  4. Designated persons
  5. Masters responsibilities
  6. Resource management
  7. Development of plans for shipboard operation
  8. Emergency preparedness
40
Q

ISM code 9-16
Report maintenance, documentation, company, verfication

A
  1. reports of non conformities and accidents
  2. maintenance of ship and equipment
  3. Documentation
  4. Company verification
  5. certification
  6. interim certification.
  7. verification
  8. certificates
41
Q

What information would you find in COSWP

A

information regarding: risk assessments, permits to work, Enclosed space entry, working at height, HV working, safety induction details, emergency drills,

42
Q

Emergency generator minimum start up time and run time

A

start up - 45 seconds
run for at least 18 hours (cargo) and 36 hours (passenger)

43
Q

Offload EMDG test

A
  1. switch from automatic to manual starting
  2. let engine run up to speed and reach parameters, run for 30 minutes.
  3. switch off EMDG andreturn back to automatic start condition.
44
Q

On-load EMDG test

A
  1. at the emergency switchboard, change selector from normal to “ENG & ACB”.
    2.
45
Q

What are the 5 permits to work

A
  1. High voltage
  2. working at height
  3. enclosed space entry
  4. Hotwork
  5. Any other dangerous work

orals (9 decks)

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